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Finding the Fourth Proportional to 7,915.91, 10,928.93 and 5,084.42

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Solution

The fourth proportional to 7,915.91, 10,928.93 and 5,084.42 is: 7,019.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.91 : 10,928.93 = 5,084.42 : x
  2. Step 2: Convert to fraction form
    7,915.91/10,928.93 = 5,084.42/x
  3. Step 3: Cross multiply
    7,915.91x = 10,928.93 × 5,084.42
  4. Step 4: Simplify right side
    7,915.91x = 55,567,251.68
  5. Step 5: Solve for x
    x = 55,567,251.68/7,915.91
  6. Step 6: Final answer
    x = 7,019.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.